Support building debug version on Windows

[csukuangfj]

Many users want to debug sherpa-onnx on Windows. However, they would have the following issues before this PR when they try to build a debug version of sherpa-onnx on windows:

onnxruntime.lib(simplify.obj) : error LNK2038: 
mismatch detected for 'RuntimeLibrary': value 'MT_StaticRelease' 
doesn't match value 'MTd_StaticDebug' in
 online-websocket-server-impl.obj 
[D:\a\sherpa-onnx\sherpa-onnx\build\sherpa-onnx\csrc\sherpa-onnx-online-websocket-server.vcxproj]

This PR enables users to build a debug version of sherpa-onnx on Windows.

You can use the following commands to build a debug version of sherpa-onnx on windows:

win64

git clone https://github.com/k2-fsa/sherpa-onnx
cd sherpa-onnx
mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=Debug ..
cmake --build . --config Debug

win32

git clone https://github.com/k2-fsa/sherpa-onnx
cd sherpa-onnx
mkdir build
cd build

# Please select one toolset among VS 2015, 2017, 2019, and 2022 below
# We use VS 2022 as an example.

# For Visual Studio 2015
# cmake -T v140,host=x64 -A Win32 -D CMAKE_BUILD_TYPE=Debug ..

# For Visual Studio 2017
# cmake -T v141,host=x64 -A Win32 -D CMAKE_BUILD_TYPE=Debug ..

# For Visual Studio 2019
# cmake -T v142,host=x64 -A Win32 -D CMAKE_BUILD_TYPE=Debug ..

# For Visual Studio 2022
cmake -T v143,host=x64 -A Win32 -D CMAKE_BUILD_TYPE=Debug ..

cmake --build . --config Debug